| Summary: | Background. The object of the study is the Doppler autocompensators phase shift
of passive interference based on quasi-optimal (simplified) discriminators using sumdifference
algorithms. The purpose of the work is a comparative analysis of the accuracy of
autocompensation depending on the parameters of passive interference and the volume of
the training sample. Materials and methods. On the basis of discriminatory algorithms synthesized
by the maximum likelihood method, the principles of constructing closed-type
discriminators and autocompensators are considered. Results. Algorithms and a block diagram
of a closed-loop auto-compensator are presented, as well as numerical results of a
comparative analysis of the accuracy of auto-compensation using various discriminators.
Conclusions. The considered closed-loop auto-compensators allow for the selection of
structures and parameters of their nodes, depending on the requirements for the accuracy of
compensation, the duration of the transient process, and the complexity of the hardware
implementation. Optimal discriminators based on sum-difference algorithms open up the
possibility of constructing quasioptimal discriminators that are easier to implement. The
analysis of autocompensators with optimal and quasi-optimal discriminators shows that the
considered simplifications lead to an insignificant decrease in the accuracy of compensation,
which allows us to recommend the proposed autocompensators for practical use.
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